CN202001661U - Electromagnetic valve with return adsorption structure - Google Patents
Electromagnetic valve with return adsorption structure Download PDFInfo
- Publication number
- CN202001661U CN202001661U CN201020684756XU CN201020684756U CN202001661U CN 202001661 U CN202001661 U CN 202001661U CN 201020684756X U CN201020684756X U CN 201020684756XU CN 201020684756 U CN201020684756 U CN 201020684756U CN 202001661 U CN202001661 U CN 202001661U
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- Prior art keywords
- isolation diaphragm
- cavity
- valve body
- fluid
- drive part
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Abstract
The utility model discloses an electromagnetic valve with a return adsorption structure, which includes a fixed piece, a valve body and an electromagnetic drive part connected sequentially. The valve body is provided with a fluid inlet and a fluid outlet. The electromagnetic drive part is provided with a coiler framework with a through channel, a coiler wound outside the coiler framework, a fixed iron core partially accommodated in the though channel of the coiler framework, a movable iron core capable of moving relative to the fixed iron core, as well as a spring and a separation membrane system placed between the fixed iron core and the movable iron core. The separation membrane system includes a first separation membrane and a second separation membrane, wherein the first separation membrane is placed between the electromagnetic drive part and the valve body and corresponds to the fluid inlet and the fluid outlet, and the second separation membrane is placed between the valve body and the fixed piece. The first separation membrane is provided with a first hollow cavity, and the second separation membrane is provided with a second hollow cavity communicated with the first hollow cavity. Through arranging the two separation membranes, the electromagnetic valve can effectively overcome pump function volume and improve the precision.
Description
Technical field
The utility model relates to a kind of solenoid valve, relates in particular to a kind of solenoid valve that does not have the pumping action volume.
Background technique
Solenoid valve is to utilize the hot-wire coil excitation to produce electromagnetic force, drives the isolation diaphragm motion, to open or throttle down, changes the flow direction of fluid, thereby reaches the purpose that executive component changes the fluid motion direction.Its kind is a lot, has many uses, and is most important a kind of in the control valve.Wherein isolating film chip two logical reversing solenoid valves are used extremely wide in medical treatment and environmental analysis Detection range and life science.It comprises the cylinder shell formula coil drive portion of the valve body, fixed block and the interior dress hot-wire coil that are provided with fluid input and outlet, and circular isolation diaphragm and the link made by rubber material.Fixed block, valve body and coil drive portion are fixedly connected sequentially, the excircle of isolation diaphragm is clamped between fixed block and the valve body, and it is corresponding with fluid input and outlet, the tapered recess at valve body center and isolation diaphragm are equipped, the lower central of isolation diaphragm by link be installed in hub of a spool top and pass the movable core of valve body on fixedly connected.The lower end and the coil drive portion bottom that are installed in the secured core of hub of a spool bottom are fixed.Between movable core and secured core, spring is housed.The electromagnetic force driving movable core that is produced by hot-wire coil is opened isolation diaphragm, allows fluid input and outlet be communicated with, and this moment, fluid can pass through.After outage, the electromagnetic force that hot-wire coil produces disappears, and the elastic-restoring force of spring resets isolation diaphragm, and fluid input and outlet are cut off.This electromagnetic valve structure compactness, in light weight, size is little, has realized miniaturization.
See also Fig. 1, it shows the partial sectional view of existing isolating film chip two three-way electromagnetic valves 200.During solenoid valve 200 energisings, when being open mode, movable core 33 ' is by the magnetic drive that hot-wire coil 32 ' produced of electromagnetic drive part 3 ', and drive isolation diaphragm 36 ' upwards (to the direction of coil 32 ') is heaved, and then with secured core 34 ' absorption, solenoid valve 200 is opened.At this moment, the fluid input 21 ' of valve body 2 ' is communicated with fluid output 22 ', and fluid flow through fluid input 21 ', inlet pipe arrangement 23 ', the space A that is formed at isolation diaphragm 36 ' below, outlet pipe arrangement 24 ' pass through fluid output 22 ' at last and flow out.Can be full of fluid this moment in the A of space.
When solenoid valve 200 outage, promptly during closed condition, movable core 33 ' drives down at the elastic-restoring force of spring 35 ' and resets, and drive isolation diaphragm 36 ' is by upwards heaving recovering state to flat state.At this moment, fluid among the A of space can be pressed against outlet outer (a few approximately microlitre), end at the outlet pipe arrangement 24 ' that links to each other with the fluid output 22 ' of solenoid valve 200, (annotate: this " the water droplet phenomenon of hanging down " performance is only for there being micro updating liquid to hang down at the pipe arrangement end can to form a little water droplet, be similar to a little water droplet and can not drip), this phenomenon is referred to as " pumping action volume ".
This pumping action volume phenomenon for the requirement of the increasing high-precision valve of client, can not satisfy gradually, because can influence client's analysis precision.Therefore, need a kind of solenoid valve, it can eliminate pumping action volume phenomenon, improves precision.
The model utility content
The purpose of this utility model is to provide a kind of resorption structure solenoid valve, effectively overcomes pumping action volume phenomenon, and improves analysis precision.
For achieving the above object, the utility model is about a kind of resorption structure solenoid valve, and it comprises fixed block, valve body and the electromagnetic drive part that connects successively.Valve body has fluid input and fluid output.Secured core in the penetrating via that electromagnetic drive part has the coil rack that offers penetrating via, is wound in the outer coil of coil rack, part is contained in coil rack and the movable core that can move with respect to secured core, spring and the isolation diaphragm system between secured core and movable core.Described isolation diaphragm system comprise between electromagnetic drive part and valve body with corresponding first isolation diaphragm of above-mentioned fluid input and fluid output, and second isolation diaphragm between valve body and fixed block.First isolation diaphragm is formed with first cavity, and second isolation diaphragm is formed with second cavity that is communicated with first cavity.
As further improvement of the utility model, described first cavity is positioned at first isolation diaphragm below, and described second cavity is positioned at second isolation diaphragm top and is communicated with first cavity.
As further improvement of the utility model, in the described second isolation diaphragm reseting procedure the remaining fluid in first cavity is produced absorption and should suck in second cavity by remaining fluid.
As further improvement of the utility model, described isolation diaphragm system also has the stem stem that connects first isolation diaphragm and second isolation diaphragm, and it runs through valve body and is communicated with first cavity and second cavity.
As further improvement of the utility model, behind the coil electricity of described electromagnetic drive part, movable core is subjected to the driving of hot-wire coil, drive first isolation diaphragm, stem stem and second isolation diaphragm and move and pressure spring to secured core, wherein first isolation diaphragm and second isolation diaphragm are heaved and are produced deformation and communication of fluid inlet and fluid output.
As further improvement of the utility model, behind the coil blackout of described electromagnetic drive part, the movable core elastic-restoring force of spring by compression drives, drive first isolation diaphragm, stem stem and second isolation diaphragm and oppositely move and reset, wherein first isolation diaphragm fluid pill inlet and fluid output.
As further improvement of the utility model, described valve body is between fixed block and electromagnetic drive part, and wherein first isolation diaphragm and second isolation diaphragm are oppositely arranged.
The beneficial effects of the utility model are: by two isolation diaphragm structures, effectively overcome pumping action volume phenomenon, improve analysis precision.
Description of drawings
Fig. 1 is the partial schematic sectional view of prior art isolation diaphragm two three-way electromagnetic valves.
Fig. 2 is the partial sectional view of the utility model resorption structure solenoid valve.
Embodiment
See also Fig. 2, the utility model resorption structure solenoid valve 100 comprises the fixed block 1 that is positioned at the bottom, is fixedly installed in the valve body 2 on the fixed block 1, the electromagnetic drive part 3 of fixedlying connected with valve body 2 and isolation diaphragm system 4.
Above-mentioned isolation diaphragm system 4 comprise first isolation diaphragm 41 that is provided with at interval and second isolation diaphragm 42 and at this to the stem stem 43 between the isolation diaphragm 41,42.This stem stem 43 runs through valve body 2 and connects first isolation diaphragm 41 and second isolation diaphragm 42.
Therefore, above-mentioned first isolation diaphragm 41 and is formed with and above-mentioned entrance pipe 23 ends and export pipeline 24 terminal first cavitys 410 that are communicated with in its below between the coil 33 of valve body 2 and electromagnetic drive part 3.Second isolation diaphragm 42 between valve body 2 and fixed block 1 and in above be formed with second cavity 420 that is communicated with first cavity 410.Stem stem 43 couples together first isolation diaphragm 41 and is communicated with first cavity 410 and second cavity 420 with second isolation diaphragm 42.
During 100 energisings of the utility model resorption structure solenoid valve, be that resorption structure solenoid valve 100 is in opening state, movable core 36 is subjected to the magnetic drive of the hot-wire coil 33 of electromagnetic drive part 3, drive first isolation diaphragm 41, stem stem 43 and second isolation diaphragm 42 and move upward, spring 35 is subjected to the extruding of movable core 36 simultaneously.First isolation diaphragm 41 and second isolation diaphragm 42 are upwards heaved, and then fluid input 21 and fluid output 22 are through entrance pipe 23 and export pipeline 24 and be communicated with, and fluid passes through.When 100 outages of resorption structure solenoid valve, be that resorption structure solenoid valve 100 is in closed condition, the magnetic drive power that hot-wire coil 33 produces disappears, and then the elastic-restoring force that produces of spring 35 drives movable core 36 and moves downward and drive first isolation diaphragm 41, stem stem 43 and second isolation diaphragm 42 and reset.The vertical water droplet that can be formed on export pipeline 24 ends originally can be drawn in second cavity 420 of second isolation diaphragm, 42 tops along with resetting of second isolation diaphragm 42.Therefore, the pumping action volume is offset by the common deformation of first, second isolation diaphragm 41,42, has realized minimizing of pumping action volume.
Special needs to be pointed out is, in the utility model embodiment only with this resorption structure solenoid valve 100 as example, the resorption structure solenoid valve of other types all is suitable for the principle that the utility model discloses in actual applications.For the person of ordinary skill of the art, that is done under instruction of the present utility model changes at equivalence of the present utility model, must be included in the scope that the utility model claim advocated.
Claims (7)
1. resorption structure solenoid valve, it comprises: the fixed block of Lian Jieing, valve body and electromagnetic drive part successively; Valve body has fluid input and fluid output; Secured core in the penetrating via that electromagnetic drive part has the coil rack that offers penetrating via, is wound in the outer coil of coil rack, part is contained in coil rack and the movable core that can move with respect to secured core, spring and the isolation diaphragm system between secured core and movable core; It is characterized in that: described isolation diaphragm system comprise between electromagnetic drive part and valve body with corresponding first isolation diaphragm of above-mentioned fluid input and fluid output, and second isolation diaphragm between valve body and fixed block, wherein first isolation diaphragm is formed with first cavity, and second isolation diaphragm is formed with second cavity that is communicated with first cavity.
2. resorption structure solenoid valve as claimed in claim 1 is characterized in that, described first cavity is positioned at first isolation diaphragm below, and described second cavity is positioned at second isolation diaphragm top and is communicated with first cavity.
3. resorption structure solenoid valve as claimed in claim 2 is characterized in that, in the described second isolation diaphragm reseting procedure the remaining fluid in first cavity is produced absorption and should suck in second cavity by remaining fluid.
4. resorption structure solenoid valve as claimed in claim 1 is characterized in that, described isolation diaphragm system also has the stem stem that connects first isolation diaphragm and second isolation diaphragm, and it runs through valve body and is communicated with first cavity and second cavity.
5. resorption structure solenoid valve as claimed in claim 4, it is characterized in that, behind the coil electricity of described electromagnetic drive part, movable core is subjected to the driving of hot-wire coil, drive first isolation diaphragm, stem stem and second isolation diaphragm and move and pressure spring to secured core, wherein first isolation diaphragm and second isolation diaphragm are heaved and are produced deformation and communication of fluid inlet and fluid output.
6. resorption structure solenoid valve as claimed in claim 5, it is characterized in that, behind the coil blackout of described electromagnetic drive part, the movable core elastic-restoring force of spring by compression drives, drive first isolation diaphragm, stem stem and second isolation diaphragm and oppositely move and reset, wherein first isolation diaphragm cuts off fluid input and fluid output.
7. resorption structure solenoid valve as claimed in claim 1 is characterized in that, described valve body is between fixed block and electromagnetic drive part, and wherein first isolation diaphragm and second isolation diaphragm are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020684756XU CN202001661U (en) | 2010-12-28 | 2010-12-28 | Electromagnetic valve with return adsorption structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020684756XU CN202001661U (en) | 2010-12-28 | 2010-12-28 | Electromagnetic valve with return adsorption structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001661U true CN202001661U (en) | 2011-10-05 |
Family
ID=44704402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020684756XU Expired - Fee Related CN202001661U (en) | 2010-12-28 | 2010-12-28 | Electromagnetic valve with return adsorption structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563173A (en) * | 2010-12-28 | 2012-07-11 | 高砂电气(苏州)有限公司 | Electromagnetic valve with back suction structure |
-
2010
- 2010-12-28 CN CN201020684756XU patent/CN202001661U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563173A (en) * | 2010-12-28 | 2012-07-11 | 高砂电气(苏州)有限公司 | Electromagnetic valve with back suction structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20131228 |